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Fluid Dynamics Assessment of the VPCAR Water Recovery System in Partial and Microgravity
Technical Paper
2006-01-2131
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Vapor Phase Catalytic Ammonia Removal (VPCAR) system is being developed to recycle water for future NASA Exploration Missions. Testing was recently conducted on NASA's C-9B Reduced Gravity Aircraft to determine the microgravity performance of a key component of the VPCAR water recovery system. Six flights were conducted to evaluate the fluid dynamics of the Wiped-Film Rotating Disk (WFRD) distillation component of the VPCAR system in microgravity, focusing on the water delivery method. The experiments utilized a simplified system to study the process of forming a thin film on a disk similar to that in the evaporator section of VPCAR. Fluid issues are present with the current configuration, and the initial alternative configurations were only partial successful in microgravity operation. The underlying causes of these issues are understood, and new alternatives are being designed to rectify the problems.
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Niederhaus, C., Nahra, H., and Flynn, M., "Fluid Dynamics Assessment of the VPCAR Water Recovery System in Partial and Microgravity," SAE Technical Paper 2006-01-2131, 2006, https://doi.org/10.4271/2006-01-2131.Also In
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